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FROM CONTAMINATION TO BEAUTIFICATION: FERNS REMOVE ARSENIC FROM SOIL FOR TEACHERS INTRODUCTION Arsenic is a chemical element that has the symbol As. Arsenic is widely distributed in nature and is associated with the ores
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Document Date: 2008-03-07 13:08:13
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FROM CONTAMINATION TO BEAUTIFICATION: FERNS REMOVE ARSENIC FROM SOIL FOR TEACHERS INTRODUCTION Arsenic is a chemical element that has the symbol As. Arsenic is widely distributed in nature and is associated with the ores